Formation and behaviour of macrovortices during a turbulent relaxation process in high-Tc superconductors

M. R. Koblischka, T. H. Johansen

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The time dependence of flux patterns obtained on an untwinned YBa 2Cu3O7-δ single crystal showing the 'meandering instability' is observed at T = 65 K using magneto-optical imaging. When applying a reversed external field to a remanent state, along the front of invading antiflux, macrovortices or droplets of flux are formed, and eventually separate from the flux front in a spiral-like motion. The time-dependent behaviour of these macrovortices is investigated in detail.

Original languageEnglish
Pages (from-to)2723-2732
Number of pages10
JournalJournal of Physics Condensed Matter
Issue number17
Publication statusPublished - 2005 May 4


ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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